/* ===================

AX2E (AXESCON XACML 2.0 Engine) is the Java authorization engine, which implements OASIS XACML 2.0 standard.
Copyright (C) 2007 AXESCON LLC

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA


Contact: AXESCON LLC - info{at}axescon.com

 =================== */
package axescon.xacml.api;

import axescon.xacml.model.policy.Target;
import axescon.xacml.model.ctx.XacmlCtx;

/**
 * @author argyn
 *         Date: Oct 20, 2005
 *         Time: 10:21:23 PM
 *         Responsibilities: matches XACML Request and XACML Target.
 */
public interface TargetMatcher {
    /**
     * matches XACML Target and XACML Request
     * @param t target
     * @param req request
     * @param ch context handler
     * @return true, if target matches given request
     * @throws XacmlException
     * @throws TargetMatchIndeterminateException
     */
    boolean match(Target t, XacmlCtx req, CtxHandler ch) throws
            XacmlException, TargetMatchIndeterminateException;

    /**
     * gets ExpressionEvaluator, which can be used when target matching
     * @return expression evaluator
     */
    ExpressionEvaluator getExpressionEvaluator();

    FnFactory getFnFactory();
}
